Calking tool



W. A. FINDLEY CALKING TOOL July 23, 1929.

Filed March 27, 1926 m 4 7 m. N W H :H M 7 6 /fl. 1 3 W/m film 1 W MM a Patented July 23, 19296 WILLIAM A. FINDLEY, OF SAN FRANCISCO, CALIFORNIA.

GALKING TOOL.

Application filed March 27, 1926.

My invention relates to improvements in calking tools for calking the heads of stay bolts and rivets in boilers and the like, wherein a plurality of concentrically arranged ca-lking members are arranged to be driven against the heads of such bolts or rivets to obtain a water or steam tight fit with the plate through which said bolts or rivets are applied.

The primary object of my invention is to provide an improved bolt or rivet calking tool.

Another object is to provide an improved tool of the character described, which will facilitate the calking of rivets and tools.

A further object is to provide an improved tool which will increase the effectiveness with which bolt or rivet heads may be calked and obtain a very great saving in time and labor.

Another object is to provide an improved tool which is readily adaptable for use upon bolt or rivet heads of various sizes.

A still further object is to provide an improved tool of the character described, which is extremely simple in construct-ion and operation.

I accomplish these.v and other objects, by means of the improved device disclosed in the drawings forming a part of the present specification, wherein like characters or reference are used to designate similar parts throughout said specification and drawings, and in which Figure 1 is a longitudinal section of my improved calking tool. 7

Figure 2 is a front elevation of the tool as shown in Fig. 1.

Figure 3 is a transverse section taken upon the line 3-3 of Fig. 1 in the direction indicated.

Figure 4 is a broken side elevation, partly in section disclosing the manner in which the tool is applied to calk the head of a stay bolt.

Figure 5 is an enlarged side elevation of a calking' member- Figure 6 is a front elevation of the member shown in Fig. 5.

Referring to the drawings, the numeral 1 is used to designate in general a body portion having an axial bore 2, and an enlarged counter bore 3, formed in one end thereof. A head 1 is threaded, or otherwise secured, in connection with the outer end of the counter bore 3; said head having a concave recess 6, formed in the outer end thereof, to fit over the Serial No. 98,036.

said member being provided with a lateral extension 11, movable within a groove 12, in the side of the head and arranged to engage a notch 13, formed in the body 1 opposite thereto. A spring. 14 mounted within the bore 9 normally holds the retaining member 8in engagement with the notch 13. The outward movement of the retaining member 8 is limited by a pin 16 set into the bottom groove 12.

The bores 7, which are preferably three in number, are arranged to receive a like plurality of calking members, 17, slidably movable therein. Each member 17' consists of a cylindrical body portion of a diameter adapted to fit neatly within a bore 7. The outer end of each member 17 is provided with a plane beveled beating surface 18 and an arcuate beveled face 19, intersecting with the face 18 to form an arcuate edge 21. The inner end of each member 17 is provided with a squared lateral extension 20. A collar 22 is fitted against the innerend of the head 4 and provided with a plurality of apertures 23, shaped to conform to the shape of the inner ends of the member 17 The extensions 20 of the members 17 and the apertures 23 of the plates are so arranged that any aperture will engage the inner end of any member 17, and when the ends of the several members 17 are engaged, each member will be held against rotation within the head A and in correct relation to the axis of the tool and to the remaining members 17'.

A hammer designated in general by .the numeral 2% is slidably mounted within the body 1 of the tool, said hammer being provided with an enlarged head portion 26, received within'theenlarged counter bore 3, andarranged to strike the inner ends of all the members 17 simultaneously. The hammer is also provided with an outwardly extending shank 27, 'arranged to'be engaged by a suitable air hammer of any suitable form, not shown, whereby the hammer 24 may be reciprocated within the body 1.

A spring 28 is mounted within an axial bore 29, formed in the head 1, said spring extending through a corresponding bore mer or the like in the Well known manner,

the head portion 26 of the hammer is caused to strike against the inner ends of the calking members 17, thereby driving said members outwardly against the bolt or rivet head 32. The beveled surfaces 18 are thus caused to beat down the head of the rivet and to seat said head tightly against the surface of the plate 31. By oscillating the tool through ap- .proximately a third of a revolution while the hammer is in operation, the calking elements 17 will be caused to beat down the head evenly around the entire surface thereof. As the operation of the hammer is very rapid, a momentary application of the tool to the belt or rivet head is all that is necessary to obtain an efficient calkin'g thereof.

The arcuate edge 21 formed upon the out-er end of each calking member 17 is arranged to conform to the circumference of the bolt or rivet head 32, and operates to drive in and shear the edge of the head 32 and obtain a smooth circular finish. Members 17 are made to fit various sizes of bolt or rivet heads. This is accomplished by forming the arcuate beveled surface 19 in such manner that the intersection of said surface with the plane beveled heatin surface 18 will define an arc of radius equal to the radius of the desired bolt or rivet head. In Figs. 5 and 6 I have indicated in dotted lines the form provided for a larger size of bolt or rivet. When the members 17 are inserted in the head 4 of the tool, the edges 21 are positioned and held by the collar 22 in concentric relation to the axis of the tool. Sets of'members 17 are made in various sizes to fit bolts and rivets of standard size. hen it is desired to adapt the tool to a different size, the head 4 is removed by pressing the retaining member 8 out of engagement with the notch 13 and unscrewing the head from the body 1. The members 1'? are then removed through the back of the head 4 and the different size inserted in place thereof. lVhen the collar 22 is again placed in engagement with the inner ends of the members 17, said members must necessarily be turned with the beating surfaces 18, correctly positioned with the axis of the tool. The head 4 is then replaced upon the body portion 1, for use as above described. The edge 21 is preferably made sharp, as disclosed in the drawings, to shear ofi the edge of the bolt or rivet head and obtain a smooth regular finish. However, for certain types of work a blunt edge may be provided, in order to form a beaded edge around the head of the bolt or rivet where desired.

The specific form and construction of my improved tool is, of course, subject to modification in numerous ways without departing from the spirit of my invention. 1, therefore, do not wish to restrict myself to specific details of construction illustrated and described, but wish to avail myself of all modifications which may fall within the scope of ab y mounted adjacent the inner ends of the calking members and arranged to be reciprocated to strike said ends and thereby drive said members axially against a bolt or rivet head.

2. A calking tool comprising a head recess upon one end thereof to fit over the heads of bolts or rivets; a plurality of calking members slidably mounted within the head and extending outwardly through the recess in the head thereof, said members being annu' larly spaced and provided with beveled beating surfaces upon their outer ends; and a hammer slidably mounted adjacent the inner ends of the calking members and arranged to be reciprocated to drive said mem bers axially against a bolt or rivet head for calking the same.

3. A calking tool comprising a head re-' cessecl upon one end. thereof to fit over the heads of bolts or rivets; a plurality of call:- ing members slidably mounted within the head and extending outwardly through the recess in the head thereof, said members being annularly spacedand provided with beveled beating surfaces upon their outer ends, and a hammer slidably mounted adjacent the inner ends of the calking members and arranged to be reciprocated to drive said members axi ally against a bolt or rivet head for calking the same, and means for holding the calking members in correct relation to the axis of the tool.

4:. A calking tool comprising a head recessed upon one end thereof to fit over the heads of bolts or rivets; a plurality of annularly spaced calking members slidably mounted within the head and extending outwardly through the recess, said members being provided with beveled ends arranged concentrically with respect to the axis of the head to form beating surfaces; means for holding the members against rotation within head and in correct relation to the axis of the rivet;

and a hammer slidably mounted adjacent the inner ends of the calking members and ar ranged to be reciprocated to drive said members axially against a belt or rivet head for calking the same.

5. A calking tool comprising a head recessed upon one end thereof to fit over the heads of bolts or rivets; a plurality of annularly spaced calking members slidably mounted within the head and extending outwardly through the recess, said members being provided with beveled ends arranged concentrically with respect to the axis of the head and terminating in arcuate edges sub stantially conforming to the circumference of a belt or rivet head to be calked; and a hammer slidably mounted adjacent the inner ends of the members and arranged to be reciprocated to drive said members against the bolt or rivet head for calking the same.

6. A calking tool comprising a head recessed upon one end thereof to fit over the heads of bolts or rivets; a plurality of annularly spaced calking members slidably mounted within the head and extending outwardly through the recess, said members being provided with beveled ends arranged concentrically with respect to the axis of the head and terminating in arcuate edges substantially conforming to the circumference of a bolt or rivet head to be calked; a hammer slidably mounted adjacent the inner ends of the members and arranged to be reciprocated to drive said members against the bolt or rivet head for calking the same; and means for preventing the rotation of the calking members within the head for positioning and retaining the members in correct relation to the axis of a rivet.

7. A calking tool comprising a head recessed upon one end thereof to fit over the heads of bolts or rivets; a plurality of annularly spaced calking members slidably mounted within the head and extending outwardly through the recess, said members being provided with beveled ends arranged concentrically with respect to the of the head and terminating in arcuate edges substantially conforming to the circumference of a bolt or rivet head to be calked; a hammer slidably mounted adjacent the inner ends of the members and arranged to be reciprocate-d to drive said members against the bolt or rivet head for calking the same; squared portions formed upon the inner ends of the calking members; and a collar fitted over the inner ends of the members and engaging the squared portions thereof to define and maintain the correct relation between said calking members.

8. A. calking tool comprising a body portion; a head detachably connected to said body portion, and having a recess formed in the outer end thereof to fit over the heads of bolts or rivets; a plurality of calking members slidably mounted within the head and extending outwardly through the recess, said members being provided with beveled beating'surfaces arranged concentrically with respect to the axis; and a hammer slidably mounted within the body portion and arranged tobe reciprocated to drive the calking elements against the heads of bolts or rivets for calking the same.

9. A calking tool comprising a body portion; a head detachably connected to said body portion, and having a recess formed in the outer end thereof to fit over the heads of bolts or rivets; a plurality of calking members slidably mounted within the head and fining and maintaining the correct relation of the same. 7

10. A calking tool comprising a body portion; a head detachably connected to said body portion, and having a recess formed in the outer end thereof to fit over the heads of bolts or rivets; a plurality of calking members slidably mounted within the head and extending outwardly through the recess, said members being provided with beveled beating surfaces arranged concentrically with respect to the axis of the tool; a hammer slidably mounted within the body portion and ar ranged to be reciprocated to drive the calking elements against the heads of belts or rivets for calking the same; and a collar mounted within the body and arranged to engage the inner ends of the calking members to define and maintain the correct relation between the same. I

11. A calking tool comprising a body portion; a head detachably connected to said body portion, and having a recess formed in the outer end thereof to fit over the heads of bolts or rivets; a plurality of calking members slidably mounted within the head and extending outwardly through the recess, said members being provided with beveled beating surfaces arranged concentrically with respect to the axis of the tool; a hammer slidably mounted within the body portion and arranged to be reoiprocated to drive the calking elements against the heads of bolts or rivets for calking the same; and a spring mounted within the body to normally hold the hammer away from the ends of the calking members.

12. A calking tool comprising a body portion; a head detachably connected to said body portion and having a recess formed in the outer end thereof to fit over the heads of belts or rivets; means for normally securing the head in assembled relation with the body; mounted within the body and arranged to be a plurality of calking members slidably reciprocated to drive the calking members mounted within the head and extending outaxially against the heads of bolts or rivets l0 wardly through the recess, said members for calking the same.

5 being provided with beveled beating surfaces In Witness whereof, I hereby set my signaarranged concentrically with respect to the ture.

axis of the tool; and a hammer slidably WILLIAM A. FINDLEY. 

